The Pterocephalia is definitely the most gracile and collectible trilobite of the McKay series. It comes in bigger sizes than this specimen but what adds to the value is the clear regeneration of one of the general spines. This was probably a recovery after predation. Nice specimen with both positive and negative present

Pterocephalia norfordi

Upper cambrian (497 - 486 mil y)

Cranbrook, British Columbia, Canada

21 mm - 0.8"

Good Quality